1 ; RUN: llc -march=mips -mcpu=mips32r2 -O0 -filetype=obj <%s | \ 2 ; RUN: llvm-dwarfdump -debug-dump=all - | FileCheck %s -check-prefix=F2 3 ; RUN: llc -march=mips -mcpu=mips32r2 -O0 -filetype=obj <%s | \ 4 ; RUN: llvm-dwarfdump -debug-dump=all - | FileCheck %s -check-prefix=F3 5 6 declare void @llvm.dbg.declare(metadata, metadata, metadata) 7 8 declare void @foo(i32*) 9 10 ; void foo(int *); 11 ; 12 ; int f2(int a, int b) { 13 ; int c __attribute__((aligned(16))) = a + b; 14 ; foo(&c); 15 ; return c; 16 ; } 17 ; 18 ; int *f3(int a, int b) { 19 ; int c __attribute__((aligned(16))) = a + b; 20 ; int *w = alloca(c); 21 ; foo(&c); 22 ; return w; 23 ; } 24 25 ; c -> DW_OP_breg29(r29): 16 26 ; F2: DW_AT_location [DW_FORM_exprloc] (<0x2> 8d 10 ) 27 ; F2: DW_AT_name [DW_FORM_strp] ( .debug_str[0x00000065] = "c") 28 29 ; Function Attrs: nounwind 30 define i32 @f2(i32 signext %a, i32 signext %b) !dbg !4 { 31 entry: 32 %a.addr = alloca i32, align 4 33 %b.addr = alloca i32, align 4 34 %c = alloca i32, align 16 35 store i32 %a, i32* %a.addr, align 4 36 call void @llvm.dbg.declare(metadata i32* %a.addr, metadata !15, metadata !16), !dbg !17 37 store i32 %b, i32* %b.addr, align 4 38 call void @llvm.dbg.declare(metadata i32* %b.addr, metadata !18, metadata !16), !dbg !19 39 call void @llvm.dbg.declare(metadata i32* %c, metadata !20, metadata !16), !dbg !21 40 %0 = load i32, i32* %a.addr, align 4, !dbg !22 41 %1 = load i32, i32* %b.addr, align 4, !dbg !23 42 %add = add nsw i32 %0, %1, !dbg !24 43 store i32 %add, i32* %c, align 16, !dbg !21 44 call void @foo(i32* %c), !dbg !25 45 %2 = load i32, i32* %c, align 16, !dbg !26 46 ret i32 %2, !dbg !27 47 } 48 49 ; c -> DW_OP_breg23(r23): 16 50 ; F3: DW_AT_location [DW_FORM_exprloc] (<0x2> 87 10 ) 51 ; F3: DW_AT_name [DW_FORM_strp] ( .debug_str[0x00000065] = "c") 52 53 define i32* @f3(i32 signext %a, i32 signext %b) !dbg !8 { 54 entry: 55 %a.addr = alloca i32, align 4 56 %b.addr = alloca i32, align 4 57 %c = alloca i32, align 16 58 %w = alloca i32*, align 4 59 store i32 %a, i32* %a.addr, align 4 60 call void @llvm.dbg.declare(metadata i32* %a.addr, metadata !28, metadata !16), !dbg !29 61 store i32 %b, i32* %b.addr, align 4 62 call void @llvm.dbg.declare(metadata i32* %b.addr, metadata !30, metadata !16), !dbg !31 63 call void @llvm.dbg.declare(metadata i32* %c, metadata !32, metadata !16), !dbg !33 64 %0 = load i32, i32* %a.addr, align 4, !dbg !34 65 %1 = load i32, i32* %b.addr, align 4, !dbg !35 66 %add = add nsw i32 %0, %1, !dbg !36 67 store i32 %add, i32* %c, align 16, !dbg !33 68 call void @llvm.dbg.declare(metadata i32** %w, metadata !37, metadata !DIExpression(DW_OP_deref)), !dbg !38 69 %2 = load i32, i32* %c, align 16, !dbg !39 70 %3 = alloca i8, i32 %2, !dbg !40 71 %4 = bitcast i8* %3 to i32*, !dbg !40 72 store i32* %4, i32** %w, align 4, !dbg !38 73 call void @foo(i32* %c), !dbg !41 74 %5 = load i32*, i32** %w, align 4, !dbg !42 75 ret i32* %5, !dbg !43 76 } 77 78 !llvm.dbg.cu = !{!0} 79 !llvm.module.flags = !{!12, !13} 80 !llvm.ident = !{!14} 81 82 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.8.0 (trunk 251783) (llvm/trunk 251781)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) 83 !1 = !DIFile(filename: "test.c", directory: "/home/vk/repos/tmp/dwarf") 84 !2 = !{} 85 !4 = distinct !DISubprogram(name: "f2", scope: !1, file: !1, line: 20, type: !5, isLocal: false, isDefinition: true, scopeLine: 20, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2) 86 !5 = !DISubroutineType(types: !6) 87 !6 = !{!7, !7, !7} 88 !7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 89 !8 = distinct !DISubprogram(name: "f3", scope: !1, file: !1, line: 27, type: !9, isLocal: false, isDefinition: true, scopeLine: 27, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2) 90 !9 = !DISubroutineType(types: !10) 91 !10 = !{!11, !7, !7} 92 !11 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !7, size: 32, align: 32) 93 !12 = !{i32 2, !"Dwarf Version", i32 4} 94 !13 = !{i32 2, !"Debug Info Version", i32 3} 95 !14 = !{!"clang version 3.8.0 (trunk 251783) (llvm/trunk 251781)"} 96 !15 = !DILocalVariable(name: "a", arg: 1, scope: !4, file: !1, line: 20, type: !7) 97 !16 = !DIExpression() 98 !17 = !DILocation(line: 20, column: 12, scope: !4) 99 !18 = !DILocalVariable(name: "b", arg: 2, scope: !4, file: !1, line: 20, type: !7) 100 !19 = !DILocation(line: 20, column: 19, scope: !4) 101 !20 = !DILocalVariable(name: "c", scope: !4, file: !1, line: 21, type: !7) 102 !21 = !DILocation(line: 21, column: 7, scope: !4) 103 !22 = !DILocation(line: 21, column: 40, scope: !4) 104 !23 = !DILocation(line: 21, column: 44, scope: !4) 105 !24 = !DILocation(line: 21, column: 42, scope: !4) 106 !25 = !DILocation(line: 22, column: 3, scope: !4) 107 !26 = !DILocation(line: 23, column: 10, scope: !4) 108 !27 = !DILocation(line: 23, column: 3, scope: !4) 109 !28 = !DILocalVariable(name: "a", arg: 1, scope: !8, file: !1, line: 27, type: !7) 110 !29 = !DILocation(line: 27, column: 13, scope: !8) 111 !30 = !DILocalVariable(name: "b", arg: 2, scope: !8, file: !1, line: 27, type: !7) 112 !31 = !DILocation(line: 27, column: 20, scope: !8) 113 !32 = !DILocalVariable(name: "c", scope: !8, file: !1, line: 28, type: !7) 114 !33 = !DILocation(line: 28, column: 7, scope: !8) 115 !34 = !DILocation(line: 28, column: 40, scope: !8) 116 !35 = !DILocation(line: 28, column: 44, scope: !8) 117 !36 = !DILocation(line: 28, column: 42, scope: !8) 118 !37 = !DILocalVariable(name: "w", scope: !8, file: !1, line: 29, type: !11) 119 !38 = !DILocation(line: 29, column: 8, scope: !8) 120 !39 = !DILocation(line: 29, column: 19, scope: !8) 121 !40 = !DILocation(line: 29, column: 12, scope: !8) 122 !41 = !DILocation(line: 30, column: 3, scope: !8) 123 !42 = !DILocation(line: 31, column: 10, scope: !8) 124 !43 = !DILocation(line: 31, column: 3, scope: !8) 125
